Car-tilting mechanism



"1,529,721 E. A. MALMGREN CAR TILTING MECHANISM May 24, 1927.

Filed ocnl. 1925 2 sheets-sheet 1 Q m M Q1 v Q N su) 5 v i ffl 3;?, "ifumn Patented May 24, 1927.

EDWARD-Mammalian oFnULu'rH, MINNEsoT'A'.

"Application `filed. October 16,v 1925. A"Serial No. 62,799.

Tliisf invention relates to a newA and improved car tilting mechanism and moie par: ticularly, to an apparatus'forv tiltingfcars in such'manner as to dump from them the inafterial which theycontain. l Y 'Y f In dumping small cars of .this type'fheretofore,the dumpinghas been usual-ly accom'- plished by'running the cars up against a stop with sufiicient velocity sothat'the momendumping action.

tum of Lthe car and cai' rcontents willcause the car-to tip upon meetingl the stop. This method of dumping is very `h'ard on the cars and'doesnot -afford a positive andruniform Itis anV objectvof the present inventioirto provide mechanism adapted to posi-tivelyenlgage a-car and tilt it toy a dumping position.

Itis a; further object to provide a .structure fofthis-cliaracter in'which means'ai'e provided for automaticallylocking the car tov the Y .mechanism f during tlie tilting movement. v v- It 4is 7also an object toprovide `construction in which the car engaging elements have a cushioned connection to the remainder of the tilting mechanism whereby the shock of the engagement of the car is taken up.

A Other and further objects will appear as the description proceeds.

I have illustrated a preferredembodiment of my invention in the accompanying drawings, in which- Figure 1 is a sectional elevation of the apparatus;

Figure 2 is a View of Figure 1 as seen from the right; p

Figure 3 is a view similar to Figure 2, but showing tlie car in the tilted position;

Figure 4 is a plan View of the mechanism, and

Figure 5 is a fragmentary side elevation of the car engaging mechanism.

In the drawings, the dump car 11 is supported from rails 12 by the trucks 13 and wheels 14. The dumping bar 15 is secured to the car truck by the brackets 16. The concrete lined pit 17 is located between the rails 12. This pit contains the cylindei 18 which is provided with pipes 19 Vand 20 adapted for the admission of fluid underpressure at the opposite ends of the cylinder. The piston 21 and piston rod 22work in the cylinder 18. The head 23 is rigidly secured to the top of the piston rod 22 by means of the pin 24.

As best shown in Figure 4, this head 23 is provided with the laterally extending lugs throughv which-slide the rods 26.-.` The f l hook 27iis supported at-its rear endl upon the transverse shaft 28 which shaft is Asupported atA .its ends in the members 29.. The members 29 have. their lower portions-30 fitting u-ponand secured to the rods 26. The 'f lower-portion of the hook l27 is split and the lockv memberA 31A is 'supported upon the rod 29 between the divided portions .of .the lioolc27:. The cross bar 32 ends ofthe rods 26 and: is provided with perfoia'tedflugs 33 between-iwhich fits the sim'- ilar lug 34 formed on the hook 'member 27. These lugs are held in fixed relation by the pin 35. It is to. be understood tliattlie cross bar 32 and the members30 are'positively secured to therods 26..:The portions 25 of the headare slidably `fitted lupon the-rods. The springs 36'are fitted-upon the' rods 26 between the members 25 and 30. f

Asbest .shown inl Figures 1and3, thetop of the piston .rod22' is provided with `an axially extending bore in which are fitted plunger 37 and spring '38. The plunger V,rods 26 pass through the lugs 25 on the head and the vsprings 36 are compressed. Fluid under pressure is now admitted through pipe 19 into the bottom of the cylinder and the piston head 21 and piston 22 are forced upwardly to the position of Figure 3. As soon as the tail 39 of the lock member 31 clears the stud 40, the plunger 37 under the influence of the spring 38 forces the locking member upwardly to close the mouth of the hook 27. This effectively retains the car connected to the mechanism during the tilting opei'ation.

y Fluid undei pressure is next applied through pipe 20 to the'top of the cylinder 18 and the fluid under pressure below the piston is released. The piston and piston rod are lowered and during their movement i'estore the car to normal position. As the is vfitted upontlie foruf'ard engaging it.

have shown one preferred form of construction by way of illustration, but it is to be understood that I contemplate such changes and modifications as come within Y the spirit and scope ot the appendedv claims.

I claim y 1. Car tilting mechanism comprising a stop member adapted to engage a portion ot' the car to arrest movement of the car, means adapted to lockl the car to the stop means, and means adapted to elevate the stop member to tilt the car.

, 2. Gar tilting mechanism comprising a stop member adapted to engage a portion of the car to arrest movement ol the car, means adapted to elevatey the stop member to tilt the car, and a member adapted to lock the car to the stop member as the stop member is elevated and to rel-ease the car as the stop member is lowered.

3. Car ytilting mechanism comprising a stop member adapted to engage Va portion of the car to arrest movementof the car, cushioning means for the stop member, and elevating mechanism adapted to raise and lower the st-op member and cushioning means.

4. Car tilting' mechanism comprising a stop member adapted to engage a portion of the car to arrest movement of the car, cushioning means and locking means for the stop member, and elevating mechanism adapted to raise andV lower the stop member, locking means and cushioning means.

Car tilting mechanism comprising stop means normally in the pathV of aportion of a car, means tor elevating said stop means, and connecting means for the stop'and elevating means whereby the stop means may be .moved out of the path of the car.

6L Car tilting mechanism comprising a hook adapted to engage over a portion of the car, locking means adapted to close the mouth ot' the hook to lock the car to the in its lower position to move it clear of the mouth of the hook.

Signed at Duluth, Minnesota', this-12th day of October, 1925.

EDWARD A. ivLiLM'earn.v Y 

